<ul> <li>Bluetooth 5.1 technology steam your favorite music without interruptions</li> <li>Using high-transparency PC shell, the internal precision components are clearly visible</li> <li>High-cost audio processor is used to actively determine the frequency of the audio source signal, automatically set the fine frequency crossover point, expand the system frequency response range, and realize low-frequency, intermediate frequency, and high-frequency distinct clearly</li> <li>Outdoor mini portable, enjoy various outdoor scenes anytime, anywhere</li> </ul> <p><strong>Specification:</strong></p> <ul> <li>Maximum output power: 5W</li> <li>Bluetooth version: V5.1</li> <li>Effective distance: within 10 meters</li> <li>Battery capacity: 400mAh</li> <li>Signal-to-noise ratio: &gt;90dB</li> <li>Speaker: 40mm</li> <li>Frequency response: 100-18KHz</li> <li>Battery charging time: 3 hours (5V/1.0A input)</li> <li>Music play time: 4 hours</li> <li>Size: 77*39.5*77mm</li> </ul>